Home / 3,981.58-5,970.68-1,515.04

Finding the Fourth Proportional to 3,981.58, 5,970.68 and 1,515.04

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Solution

The fourth proportional to 3,981.58, 5,970.68 and 1,515.04 is: 2,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.58 : 5,970.68 = 1,515.04 : x
  2. Step 2: Convert to fraction form
    3,981.58/5,970.68 = 1,515.04/x
  3. Step 3: Cross multiply
    3,981.58x = 5,970.68 × 1,515.04
  4. Step 4: Simplify right side
    3,981.58x = 9,045,819.03
  5. Step 5: Solve for x
    x = 9,045,819.03/3,981.58
  6. Step 6: Final answer
    x = 2,271.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.